| Business | Phone |
| Gulf Coast Hydrostatic 9845 J C Summers Ln, Denham Springs 70726 | (225) 667-0735 |
| H & H Diesel Svc 9076 Lockhart Rd, Denham Springs 70726 | (225) 667-1505 |
| Newton Brothers Diesel Svc 33543 La Highway 16, Denham Springs 70706 | (225) 665-7440 |
| Triple A Diesel Svc 33226 La Highway 1019, Denham Springs 70706 | (225) 665-4841 |